Retuningk-saw



H. G. DENNIS.

PRUNING SAW.`

APPLICATiGN man MAR. 3. 1919.

Pzrtnted. Oct. 21, 1919.

Tm; COLUMBIA PLANQGRAP" cn., wAsxnNToN, D. c

y VUNITED STATES PATENT FFTFJ.

HOWARD c.-` DENNIS, or Noam ADAMS, :MIC HzrcraitV PRUNING-SAW.

1,319,571. r iger To cll'whom tmc-y concern:

Be it known that I, VHOWARD G. DENNIS, a citizen of the United States, residing` at North Adams, in the countyof Hillsdale and'State of Michigan, have invented new and usefull Improvements in Pruning-Saws, of'whichh the follow-ing is a specification.

This invention relates to an improved pruning implement.

In carrying out my invention it is my purpose toI produce an implement for the pruning of fruit treesI which shall beactuated expeditiously and in a convenient andeasy manner by the operator.

It is also my purpose to produce a pruning device in which the cutting implement is in the nature of a rotary saw, and wherein novel means is providedVfor operating the saw. -1

Other objects and advantages will present themselves as the nature of the invention is more fully understood, reference being had to the accompanying` drawings, in

which,

Figure 1 is a front elevation of a priming implement constructed in accordance with the present invention.

Fig. 2 is a similar view, one of the members of the two part casing being removed.

Fig. 3 is a sectional view approximately on the line J1-3 of Fig. 2.

Fig. 4 is a detail sectional view illustrating the manner in which the saw will be clamped upon the shaft therefor, or removed from the said shaft.

Fig. 5 is a fragmentary elevation of the saw, illustrating the arrangement of the openings therein.

As disclosed by the drawings, the improvement contemplates the employment of a hollow substantially rectangular frame 6 which is constructed of some light material, and which is of a size and weight to permit of the ready handling thereof by the 0perator.

The frame 6 comprises two similar members, which, at suitable points are .formed with outstanding ears or lugs 7 at the confronting edges of the members, and through these lugs are passed securing elements, in the nature of removable members, such as nuts and bolts. The frame comprises two spaced branches 8 and 9 respectively, and rghtangularbranches 1() connecting the parallel "branches d and 9. The 'branches 8 and 9, will hereinafter refer te the .liond Specification of IiettcrsiBatcnt.

application mea March 3, 1919. seraino. 280,469.

gitudinal members ofthe frame, and. will also referto the branch Sas the inner mem.-

ber and the branch 9 as the outer member. The memberl Sis centrally provided with an extensionforming a handle 11 which is designed to be gripped bythe operator so that the saw, (hereinafter to be referred to), may be conveniently brought to engage with the lim'bs of the tree to be pruned. The handle 11 is also hollow and inI 'the' bore thereof is arranged a shaft; 12, the said shaft having its inner-end? provided with a beveled.l gear 13 arranged in thehol'low and enlarged innen end of the handle." The sha-ft 12 has*A the end' thereof extending through the'liandle connected with a flexible shaft 14, and this shaft 14;V may be operated by any desired power. The inner member 8 of the frame is provided with suitable spaced bearings 15 for a longitudinally arranged shaft 16, the said shaft having centrally keyed thereto a pinion 17 that meshes with the pinion 13. The shaft 16 has its ends extended into the branches 10 of the frame 6 and has secured on its said ends, sprocket wheels, around which is trained endless sprocket chains 19, and these chains 19 are also trained over sprocket wheels 20 which are provided on the ends of a divided shaft journaled in suitable bearings in the outer member 9 of the frame. The sections' of the'outer shaft are indicated by the numerals 21 and 22 respectively, the outer member 9 of the frame also comprising two sections, indicated by the numerals 23 and 24 respectively. The outer end of the shaft 21 is preferably provided with a head 25, the outer face of which loeing fiat, and the said head being formed with spaced openings 26. Upon the outer end of the shaft 22 is .slidably arranged a sleeve 27 havingits outer end provided with a head 28, the outer face of which being flat and the said sleeve, upon its said outer face is provided with extending studs 29 arranged to be received in the openings 2G of the head 25, and to also pass through openings 30 in the saw 31. The numeral 32 designates a binding element which passes through the sleeve 27 and frictionally contacts with the shaft 22 so as to lock the sleeve upon the shaft and in engagement with the saw 31. .The saw is arranged between the confronting enfle of the sectirv` 2":

hy the arr'ang "it above described. it will he noted that the saw may 'be readily and 24C of the frame,

Cri

secured to or removed from the device. Allof the compartments are comparatively small in size and light in Weight, so that the implement may be readily handled by the operator, the handle 11 may, of course, be of any desired length, whereby the implement may be operated from the ground, if desired, but in some instances, it is desirable that the handle 11 be comparatively short so as not to interfere with the operation of the implement when used in severing the lower branches of trees or in pruning treesof comparatively small heights. It is also believed that from the foregoing descri tion, when taken in connection with the drawings, the construction, operation and advantagesof the improvement will be perfectly apparent.

Having thus described the invention, what I claim is:

A pruning implement comprising a two-A part hollow substantially rectangular frame, a handle on one of the longitudinal branches of the frame, a shaft journaled in the handle and having its inner end pro- Copies of this patent may be obtained for vided with a pinion, a fleiiibleA shaft connected to the first mentioned shaft, a shaft journaled in bearings'in both the longitudinal branches of the frame, sprocket Wheels 'able sleeve on the other shaft having a head provided with lugs designed to be received in the openings in the head of the first mentioned shaft, a rotary saw having openings, spaced in the center thereof, and designed to receive the lugs on the headV of thesleeve, and a binding element between the sleeve and the shaft upon which the saw is arranged.

In testimony whereof I affix my signature.

HOWARD e. DENNIS.

ive cents each, by addressing the fCpmmissioner of Patents, Washington, D. C. 

